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Average Weather in Dilbeek Belgium

In Dilbeek, the summers are comfortable and partly cloudy and the winters are long, very cold, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 34°F to 74°F and is rarely below 22°F or above 85°F.

Based on the tourism score, the best time of year to visit Dilbeek for warm-weather activities is from late June to early September.

Climate Summary

very coldcoldcoolcomfortablecoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow58%58%27%27%overcastclearprecipitation: 2.2 inprecipitation: 2.2 in1.3 in1.3 inmuggy: 3%muggy: 3%0%0%drydrytourism score: 6.9tourism score: 6.90.10.1
Click on each chart for more information.

Temperature

The warm season lasts for 3.0 months, from June 11 to September 10, with an average daily high temperature above 67°F. The hottest day of the year is August 5, with an average high of 74°F and low of 57°F.

The cool season lasts for 3.7 months, from November 18 to March 9, with an average daily high temperature below 48°F. The coldest day of the year is February 8, with an average low of 34°F and high of 43°F.

Average High and Low Temperature

Average High and Low Temperature in DilbeekwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 843°FFeb 843°FAug 574°FAug 574°F34°F34°F57°F57°FJun 1167°FJun 1167°FSep 1067°FSep 1067°FNov 1848°FNov 1848°FMar 948°FMar 948°F52°F52°F53°F53°F40°F40°F37°F37°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature

Average Hourly Temperature in DilbeekJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Vancouver, Canada (4,862 miles away) is the far-away foreign place with temperatures most similar to Dilbeek (view comparison).

Clouds

In Dilbeek, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Dilbeek begins around March 31 and lasts for 6.5 months, ending around October 13. On July 22, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 58% of the time, and overcast or mostly cloudy 42% of the time.

The cloudier part of the year begins around October 13 and lasts for 5.5 months, ending around March 31. On December 30, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% of the time.

Cloud Cover Categories

Cloud Cover Categories in DilbeekclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2258%Jul 2258%Dec 3027%Dec 3027%Mar 3142%Mar 3142%Oct 1343%Oct 1343%NowNowclearmostly clearpartly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Dilbeek varies throughout the year.

The wetter season lasts 8.3 months, from May 14 to January 24, with a greater than 28% chance of a given day being a wet day. The chance of a wet day peaks at 34% on December 22.

The drier season lasts 3.7 months, from January 24 to May 14. The smallest chance of a wet day is 23% on April 23.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 33% on May 26.

Daily Chance of Precipitation

Daily Chance of Precipitation in DilbeekwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Dec 2234%Dec 2234%Apr 2323%Apr 2323%Jan 2428%Jan 2428%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Dilbeek experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Dilbeek. The most rain falls during the 31 days centered around December 23, with an average total accumulation of 2.1 inches.

The least rain falls around April 20, with an average total accumulation of 1.3 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Dilbeek varies extremely over the course of the year. In 2021, the shortest day is December 21, with 7 hours, 56 minutes of daylight; the longest day is June 21, with 16 hours, 31 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:28 AM on June 17, and the latest sunrise is 3 hours, 17 minutes later at 8:45 AM on December 31. The earliest sunset is at 4:36 PM on December 12, and the latest sunset is 5 hours, 24 minutes later at 10:00 PM on June 24.

Daylight saving time (DST) is observed in Dilbeek during 2021, starting in the spring on March 28, lasting 7.1 months, and ending in the fall on October 31.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in DilbeekJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 175:28 AMJun 175:28 AM10:00 PMJun 2410:00 PMJun 24Dec 124:36 PMDec 124:36 PM8:45 AMDec 318:45 AMDec 31Mar 28DSTMar 28DSTDSTOct 31DSTOct 31daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunsetNowNow
The solar day over the course of the year 2021. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Moon

The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level in Dilbeek, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 2% of 2% throughout.

Humidity Comfort Levels

Humidity Comfort Levels in DilbeekJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 210%Nov 210%Jul 243%Jul 243%NowNowcomfortablecomfortabledrydryhumidhumid
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Dilbeek experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.7 months, from October 15 to April 5, with average wind speeds of more than 10.7 miles per hour. The windiest day of the year is January 7, with an average hourly wind speed of 13.0 miles per hour.

The calmer time of year lasts for 6.3 months, from April 5 to October 15. The calmest day of the year is August 4, with an average hourly wind speed of 8.4 miles per hour.

Average Wind Speed

Average Wind Speed in DilbeekwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphJan 713.0 mphJan 713.0 mphAug 48.4 mphAug 48.4 mphOct 1510.7 mphOct 1510.7 mphApr 510.7 mphApr 510.7 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Dilbeek varies throughout the year.

The wind is most often from the west for 1.5 months, from February 24 to April 8 and for 4.8 months, from May 1 to September 25, with a peak percentage of 45% on July 11. The wind is most often from the south for 1.3 weeks, from April 8 to April 17 and for 5.0 months, from September 25 to February 24, with a peak percentage of 28% on April 11. The wind is most often from the north for 2.0 weeks, from April 17 to May 1, with a peak percentage of 28% on April 25.

Wind Direction

Wind Direction in DilbeekSWNWSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Dilbeek is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.0 months, from June 29 to September 28, with an average temperature above 61°F. The day of the year with the warmest water is August 13, with an average temperature of 66°F.

The time of year with cooler water lasts for 3.9 months, from December 13 to April 10, with an average temperature below 46°F. The day of the year with the coolest water is February 20, with an average temperature of 41°F.

Average Water Temperature

Average Water Temperature in DilbeekwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°FAug 1366°FAug 1366°F41°FFeb 2041°FFeb 20Jun 2961°FJun 2961°FSep 2861°FSep 2861°FDec 1346°FDec 1346°FApr 1046°FApr 1046°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Dilbeek throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Dilbeek for general outdoor tourist activities is from late June to early September, with a peak score in the first week of August.

Tourism Score

Tourism Score in Dilbeekbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.96.90.10.1NowNowprecipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Dilbeek for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.

Beach/Pool Score

Beach/Pool Score in DilbeekJanFebMarAprMayJunJulAugSepOctNovDec002244668810103.83.80.00.0NowNowprecipitationprecipitationcloudsclouds beach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Dilbeek typically lasts for 7.4 months (225 days), from around April 3 to around November 14, rarely starting before February 27 or after April 27, and rarely ending before October 18 or after December 14.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Dilbeekgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 350%Apr 350%Nov 1450%Nov 1490%Apr 2790%Apr 2790%Oct 1890%Oct 1810%Feb 2710%Feb 2710%Dec 1410%Dec 141%Jan 91%Jan 9Jul 24100%Jul 24100%NowNowvery coldcoldcoolcomfortablewarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Dilbeek should appear around April 20, only rarely appearing before April 4 or after May 6.

Growing Degree Days

Growing Degree Days in DilbeekJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°FApr 2090°FApr 2090°FJul 16900°FJul 16900°FSep 221,800°FSep 221,800°FDec 312,045°FDec 312,045°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.6 months, from April 30 to August 18, with an average daily incident shortwave energy per square meter above 5.2 kWh. The brightest day of the year is June 26, with an average of 6.4 kWh.

The darker period of the year lasts for 3.7 months, from October 27 to February 18, with an average daily incident shortwave energy per square meter below 1.8 kWh. The darkest day of the year is December 22, with an average of 0.6 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in DilbeekbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 266.4 kWhJun 266.4 kWhDec 220.6 kWhDec 220.6 kWhApr 305.2 kWhApr 305.2 kWhAug 185.2 kWhAug 185.2 kWhOct 271.8 kWhOct 271.8 kWhFeb 181.8 kWhFeb 181.8 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Dilbeek are 50.848 deg latitude, 4.260 deg longitude, and 276 ft elevation.

The topography within 2 miles of Dilbeek contains only modest variations in elevation, with a maximum elevation change of 223 feet and an average elevation above sea level of 169 feet. Within 10 miles contains only modest variations in elevation (512 feet). Within 50 miles contains significant variations in elevation (1,663 feet).

The area within 2 miles of Dilbeek is covered by artificial surfaces (67%) and cropland (28%), within 10 miles by artificial surfaces (49%) and cropland (39%), and within 50 miles by cropland (52%) and artificial surfaces (25%).

Data Sources

This report illustrates the typical weather in Dilbeek, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 6 weather stations near enough to contribute to our estimation of the temperature and dew point in Dilbeek.

For each station, the records are corrected for the elevation difference between that station and Dilbeek according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Dilbeek is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Dilbeek and a given station.

The stations contributing to this reconstruction are: Brussels Airport (46%, 17 kilometers, east); Munte (12%, 43 kilometers, west); Chièvres Air Base (12%, 43 kilometers, southwest); Saint-Ghislain Airport (11%, 43 kilometers, southwest); Brussels South Charleroi Airport (10%, 45 kilometers, south); and Gent / Industrie-Zone (9%, 49 kilometers, northwest).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.